CN111887932A - Auxiliary positioning device for foot osteotomy - Google Patents

Abstract

The invention belongs to the technical field of auxiliary positioning of foot osteotomy, and aims to solve the problem of large error in the direction of foot osteotomy during the existing foot osteotomy operation. For this purpose, the present invention provides an auxiliary positioning device for foot osteotomy. The auxiliary positioning device for foot osteotomy includes a fixing part, a posture adjusting part connected with the fixing part, and a guiding part arranged on the posture adjusting part, The fixing part is used to fix the foot to be osteotomy, the posture adjusting part is used to adjust the position and orientation of the guide part relative to the foot, and the guide part is used to guide the guide pin to be fixed to the foot. Through the synergy of the fixing part, the posture adjusting part and the guiding part, for the feet with different degrees of deformity, the guide pin can be fixed to the foot to be osteotomy according to the required position and orientation, which ensures the accuracy of the guide pin Positioning, thus ensuring the accurate osteotomy direction and achieving the ideal correction effect.

Description

Foot osteotomy auxiliary positioning device

technical field

The invention belongs to the technical field of auxiliary positioning of foot osteotomy, and specifically provides an auxiliary positioning device for foot osteotomy.

Background technique

Forefoot disease is a very common clinical patient, the most representative of which is hallux valgus deformity. Forefoot deformities such as hallux valgus are common in modern women due to the long-term compression of the front of the foot by wearing high-heeled shoes for a long time, or due to genetic and other factors, which brings great trouble to the patients' lives. With the continuous advancement of technology and medical technology, foot osteotomy has become one of the main methods to correct foot deformities such as hallux valgus. There are many types of foot osteotomy. As the most common one, the following is an example of metatarsal osteotomy in hallux valgus.

Hallux valgus deformity refers to the lateral deviation of the big toe of the foot at the first metatarsophalangeal joint. Usually, depending on the patient's condition, a metatarsal osteotomy is required, such as amputation of the first metatarsal to shorten it and move it down an appropriate length for fixation, so that the distal end of the metatarsal is displaced relative to the proximal end of the metatarsal to achieve deformity correction. 1 to 4 for description, wherein FIG. 1 is a schematic diagram of the state after the first metatarsal bone is cut off in the existing foot osteotomy, and FIG. 2 is the two parts of the first metatarsal bone cut off in the existing foot osteotomy. Figure 3 is a schematic diagram of the state after removal of the redundant part of the first metatarsal in the existing foot osteotomy, and Figure 4 is the state after the two parts of the first metatarsal cut off in the existing foot osteotomy are fixed. Schematic. During the implementation of foot osteotomy, as shown in Figure 1, firstly, two cuts are made on the first metatarsal along the specific direction determined before the operation to divide the first metatarsal 1 into a trunk 11 and a distal bone fragment 12. The trunk 11 and The distal bone fragment 1 forms a "V"-shaped ridge and a "V"-shaped groove at the breaking point, and the extension direction of the "V"-shaped ridge and the "V"-shaped groove forms a certain angle with the axis of the normal phalangeal The extension direction of the V-shaped ridge and the "V"-shaped groove is inclined toward the heel and plantar direction of the foot); as shown in FIG. Move a certain distance in the direction of the first metatarsal 1, the overall length of the first metatarsal 1 is shortened and the distal bone fragment 5 is moved down a certain distance relative to the trunk 4; As shown in FIG. 4 , the main stem 11 and the distal bone fragment 12 are finally fixed by fixing means such as steel nails.

Due to the different deformities of different patients, it is necessary to make the displacement of the distal end of the metatarsal relative to the proximal end of the metatarsal different (including different directions and different distances). Take control. For example, the direction of the metatarsal osteotomy is inclined only in the horizontal plane toward the heel or toe to shorten or lengthen the length of the metatarsal bone after correction of the osteotomy, and the direction of the osteotomy is inclined upward or downward only in the plane perpendicular to the normal toe axis Elevation or lowering of the proximal metatarsal after corrective osteotomy, or the direction of the osteotomy is a combination of both. However, in the process of osteotomy, because there is no suitable quantitative tool for determining the direction, experienced doctors decide the direction of osteotomy based on experience and directly perform the osteotomy, so it is difficult to quantify their own experience in scientific research and academic exchanges. , hindering communication; while a relatively inexperienced doctor inserts a guide pin on the first metatarsal 1 after visual inspection of the osteotomy direction during the operation (as shown in Figure 5, mark 3 shows that the guide pin is on the plane shown) The first metatarsal bone 1 is cut off with the oscillating saw 2 according to the direction of the guide needle. In fact, it is impossible to quantify the direction of the osteotomy. You can only rely on your own intuition to accumulate experience. Obviously, this will significantly prolong their learning curve. Due to the complex and diverse foot deformities of different patients, the data cannot be quantified. There is a large error in the direct osteotomy based on experience and the direction of the osteotomy determined by visual inspection, which leads to the optimal correction effect after osteotomy. , and even lead to the failure of corrective surgery. At the same time, if the direction of osteotomy can be accurately quantified, it will have a multiplier effect on the accumulation of doctors' own experience and the mutual learning and communication between doctors.

Therefore, a new technical solution is needed in the art to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above problems in the prior art, that is, in order to solve the problem of large error in the direction of the osteotomy of the foot during the existing osteotomy of the foot, the present invention provides an auxiliary positioning device for the osteotomy of the foot. The partial osteotomy auxiliary positioning device comprises a fixed part, a posture adjustment part connected with the fixed part, and a guide part arranged on the posture adjustment part, wherein the fixed part is used for fixing the foot to be osteotomy , the posture adjusting part is used to adjust the position and orientation of the guide part relative to the foot part, and the guide part is used to guide the guide needle to be fixed to the foot part.

In the preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the posture adjustment part includes: a first adjustment component, which is connected to the fixing part and used to adjust the length of the guide part along the foot part a direction relative to the position of the foot; a second adjustment assembly connected to the first adjustment assembly for adjusting the position of the guide relative to the foot along the thickness direction of the foot; Three adjustment assemblies, which are connected to the second adjustment assembly, are used to adjust the orientation of the guide portion.

In a preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the first adjustment component includes a guide rail detachably connected to the fixed portion and a first moving member that is cooperatively connected with the guide rail, and the guide rail is located at the On one side of the fixed part, the second adjustment assembly is connected to the first moving member, the guide rail is provided with a first scale line indicating the relative position of the first moving member and the guide rail, the A first locking member is provided on the first moving member, and the first locking member is used for locking the first moving member.

In the preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the second adjustment assembly includes a column disposed on the first moving member and a second moving member that can move along the axis of the column, so The third adjustment assembly is connected to the second moving member, the upright is provided with a second scale line indicating the relative position of the second moving member and the upright, and the second moving member is provided with a second A locking member, the second locking member is used for locking the second moving member.

In the preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the third adjustment component includes a connecting rod, and the first end of the connecting rod is pivotally connected to the second moving member through a third locking member, so The guide portion is connected to the second end of the connecting rod, the first end of the connecting rod is provided with a third graduation mark for indicating the pivoting angle of the connecting rod, and the third locking member is used for locking the connecting rod A connecting rod, wherein the pivot axis of the connecting rod is parallel or collinear with the axis of the column.

In a preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the guide portion and the second end of the connecting rod are pivotally connected through a fourth locking member, and the fourth locking member is sleeved with an indicator for indicating the desired position. A scale ring for the pivoting angle of the guide portion, the fourth locking member is used to lock the guide portion, wherein the pivot axis of the guide portion is perpendicular to the pivot axis of the link.

In a preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the guide portion includes a body, and a channel for allowing the guide pin to pass through is formed on the body.

In the preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the cross-sectional area of the end of the channel gradually decreases along the passing direction of the guide pin.

In a preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the fixing portion includes a first fixing member and a second fixing member that are fixedly connected or integrally formed, and the first fixing member and the second fixing member are respectively for securing the foot and the corresponding leg.

In the preferred technical solution of the above-mentioned auxiliary positioning device for foot osteotomy, the first fixing member is provided with a plurality of hollow holes, and the guide rail and some of the hollow holes are connected by connecting members.

Those skilled in the art can understand that, in the technical solution of the present invention, the auxiliary positioning device for foot osteotomy includes a fixing part, a posture adjusting part connected with the fixing part, and a guiding part arranged on the posture adjusting part. During the osteotomy of the foot, the foot to be osteotomy is fixed to the fixed part with the aid of the foot osteotomy auxiliary positioning device, the position and orientation of the guide part relative to the foot are adjusted by the posture adjustment part, and then the The guide part guides the guide pin to be fixed to the foot according to the required position and direction, which ensures the accuracy of the fixed position and orientation of the guide pin, and then relies on the guide pin to guide the doctor to perform the osteotomy according to the precise direction, avoiding the need for direct cutting by experience. Osteotomy or visually determine the fixed orientation and orientation of the guide pin, which leads to the problem of large deviation of the osteotomy angle, thereby achieving the ideal correction effect. Different patients have different foot sizes and different foot deformities. The doctor can easily adjust the position and direction of the guide part relative to the foot according to the specific situation, so that the guide needle can be fixed to the foot according to the appropriate orientation. It can meet the positioning and orientation requirements of different osteotomy directions, and has a wide range of applications.

Description of drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

Fig. 1 is the state schematic diagram after the first metatarsal is cut off in the existing foot osteotomy;

Fig. 2 is the state schematic diagram after the movement of two parts of the first metatarsal bone cut off in the existing foot osteotomy;

Fig. 3 is the state schematic diagram of removing the redundant part on the first metatarsal bone in the existing foot osteotomy;

Fig. 4 is the state schematic diagram of the two parts of the first metatarsal cut off in the existing foot osteotomy after fixation;

Fig. 5 is the state schematic diagram of determining the osteotomy direction with the help of a guide pin in the existing foot osteotomy operation;

6 is a first structural schematic diagram of a foot osteotomy auxiliary positioning device according to an embodiment of the present invention;

7 is a second structural schematic diagram of a foot osteotomy auxiliary positioning device according to an embodiment of the present invention;

8 is a schematic side view of a foot osteotomy auxiliary positioning device according to an embodiment of the present invention.

List of reference numerals:

1. The first metatarsal; 11. The trunk; 12. The distal bone fragment; 2. The saw; 3. The insertion direction of the guide pin; 412, the first hollow hole B; 42, the leg fixing plate; 421, the second hollow hole; 5, the posture adjustment part; 51, the first adjustment component; 511, the support arm; 512, the cylindrical slide rail; Block; 514, screw; 515, first scale line; 52, second adjustment component; 521, cylinder; 522, ring clamp; 523, cantilever; 524, first tightening screw; 525, second scale line; 53 531, the connecting rod; 532, the second tightening screw; 533, the third scale line; 534, the support plate; 535, the third tightening screw; 536, the scale ring; 537, the hook; 6, the guide department.

Detailed ways

First of all, those skilled in the art should understand that the embodiments described below are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the first positioning member and the second positioning member in the fixing portion of the auxiliary positioning device for foot osteotomy of the present invention are integrally formed, those skilled in the art can adjust them as required to suit specific applications In some occasions, for example, the first positioning member and the second positioning member in the fixing portion may be separately formed and then fixed and connected together by welding, riveting, screwing, or the like. Obviously, the adjusted technical solution will still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms “upper”, “lower”, “left”, “right” and other terms indicating a direction or a positional relationship are based on the direction or positional relationship shown in the drawings, which are only It is for ease of description, not to indicate or imply that the device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be fixed The connection can also be a detachable connection or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Based on the problem of the large error in the direction of the osteotomy of the foot during the existing osteotomy of the foot pointed out in the background art, the present invention provides an auxiliary positioning device for the osteotomy of the foot, which aims to guide the guide needle according to the accurate position and orientation Fixed to the foot to be osteotomy. Specifically, the auxiliary positioning device for foot osteotomy of the present invention comprises a fixing part, a posture adjusting part connected with the fixing part, and a guiding part arranged on the posture adjusting part, and the fixing part is used for fixing the foot to be osteotomy, The posture adjustment part is used to adjust the position and orientation of the guide part relative to the foot, and the guide part is used to guide the guide needle to be fixed to the foot. With the aid of the foot osteotomy auxiliary positioning device of the present invention, before the osteotomy operation, the foot to be osteotomy is fixed to the fixing part, and then the position and orientation of the guide part relative to the foot are adjusted by adjusting the posture adjustment part, Under the guidance of the guide part, the guide needle is fixed to the foot according to the exact position and orientation. During the osteotomy operation, use an osteotomy tool such as an oscillating saw to perform the osteotomy with reference to the direction of the guide wire.

Fixing the foot to be osteotomy to the fixing part avoids the accidental displacement of the foot during the osteotomy operation, which leads to the displacement of the osteotomy direction. Through the synergy of the fixed part, the position adjustment part and the guide part, for feet with different degrees of deformity, the position and orientation of the guide part relative to the foot can be adjusted, so that the guide part can guide the guide needle according to the accurate position and direction. To the foot to be osteotomy, the precise positioning and orientation of the guide pin is ensured, thereby ensuring the accurate osteotomy direction during the osteotomy, thereby achieving an ideal correction effect.

6 to 8 , the auxiliary positioning device for foot osteotomy of the present application will be described in detail. 6 is a schematic structural diagram 1 of an auxiliary positioning device for foot osteotomy according to an embodiment of the present invention, FIG. 7 is a schematic structural diagram 2 of an auxiliary positioning device for foot osteotomy according to an embodiment of the present invention, and FIG. A schematic side view of a foot osteotomy auxiliary positioning device according to an embodiment of the invention.

As shown in FIGS. 6 to 8 , the auxiliary positioning device for foot osteotomy includes a fixing portion 4 , a posture adjusting portion 5 connected to the fixing portion 4 , and a guiding portion 6 disposed on the posture adjusting portion 5 . The fixing portion 4 includes The first fixing member and the second fixing member are integrally formed, the first fixing member is the foot fixing plate 41 used to fix the foot to be osteotomy, and the second fixing member is the leg fixing plate 42 used to fix the corresponding leg , the foot fixing plate 41 is distributed with a plurality of first hollow holes, the first hollow holes include two first hollow holes A (411) near both ends of the foot fixing plate 41 and a plurality of first hollow holes A (411) distributed on the foot fixing plate 41 There are first hollow holes B ( 412 ), and a plurality of second hollow holes 421 are distributed on the leg fixing plate 42 . When abutting the foot against the foot fixing plate 41, use a bandage/rubber band/elastic band, etc. to pass through the first hollow hole B (412) around the foot and fasten the foot to the foot fixing plate 41 . Similarly, when the corresponding leg is against the leg fixing plate 42, use a bandage/rubber band/elastic band, etc. to pass through the second hollow hole 421 around the leg and fasten the leg to the leg fixing plate 42 .

A plurality of first hollow holes B ( 412 ) are distributed on the foot fixing plate 41 , and a plurality of second hollow holes 421 are distributed on the leg fixing plate 42 , which can be selected according to the patient’s foot size and leg thickness. The first hollow hole B412 and the second hollow hole 421 are used to pass bandages/rubber bands/elastic bands, etc. to meet the fixation of feet and legs of different sizes. At the same time, these hollow holes also reduce the weight of the fixed part, which is convenient for installation and removal.

It can be understood that the integral molding of the first fixing member and the second fixing member is only a specific embodiment, and those skilled in the art can make adjustments according to actual needs. For example, the first positioning member and the second positioning member can be formed separately. They are fixed and connected together by welding, riveting, screwing, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention, and are all within the protection scope of the present invention.

Continuing to refer to FIGS. 6 to 8 , the posture adjustment part 5 includes a first adjustment component 51 connected to the fixing part 4 , a second adjustment component 52 connected to the first adjustment component 51 , and a third adjustment component 52 connected to the second adjustment component 52 . The adjustment assembly 53, the first adjustment assembly 51 is used to adjust the position of the guide portion 6 relative to the foot along the length direction of the foot, and the second adjustment member 52 is used to adjust the guide portion 6 along the thickness direction of the foot relative to the foot. position, the third adjusting member is used to adjust the orientation of the guide portion 6 .

Specifically, the first adjustment assembly 51 includes a support arm 511, a guide rail and a first moving member. At the bottom of the foot fixing plate 41 near the two ends, one end of the two support arms 511 is respectively fixed to the foot fixing plate 41 by fitting with the first hollow hole A (411) through a connecting piece (such as a screw), and the other end protrudes out. to one side of the foot fixing plate 41 . A guide rail is connected between the two support arms 511 , and a first moving member is matched and connected to the guide rail. For example, the guide rail includes two parallel cylindrical slide rails 512 , and two ends of the two cylindrical slide rails 512 are respectively fixed to one end of the two support arms 511 protruding from the foot fixing plate 41 . The first moving member is a slider 513 , the slider 513 is slidably connected with the two cylindrical slide rails 512 , and a first locking member (such as a screw 514 ) is provided on the side of the slider 513 , which is away from the cylindrical slide rail of the foot fixing plate 41 . The surface of the 212 is provided with a first scale line 215 , and the operator can move the slider 213 along the length direction of the foot relative to the cylindrical slide rail 212 by a required distance according to the first scale line 215 . The two support arms 511 are detachably connected to the foot fixing plate 41 by connecting parts such as screws, so that the guide rail in the first adjustment assembly can be easily fixed to the left or right side of the foot fixing plate 41 as required, so as to be suitable for Osteotomy-assisted positioning in the left or right foot.

Further, in a feasible implementation manner, a positioning column may also be provided on the support arm 511 , and the cross-sectional dimension of the positioning column is the same as the size of the first hollow hole B ( 412 ) on the foot fixing plate 41 . When the arm 511 is fixed to the foot fixing plate 41, it penetrates part of the first hollow hole B (412) through the positioning column, and cooperates with the first hollow hole A (411) through fasteners such as screws to connect the support arm 511 to the foot. The fixing plates 41 are fixed together.

The cooperation between the positioning post and part of the first hollow hole B ( 412 ) can make the fixed connection between the support arm 511 and the foot fixing plate 41 more reliable.

Still referring to FIGS. 6 to 8 , the second adjusting assembly 52 includes a column (eg, a cylinder 521 ) disposed on the slider 513 and a second moving member that can move along the axis of the column. The second moving member includes an annular clamp 522 And the cantilever 523 formed integrally with the annular clamp 522, the annular clamp 522 is sleeved on the cylinder 521, and can not only move up and down along the axis of the cylinder 521, but also rotate around the axis of the cylinder 521. The opening of the annular clamp 522 A second locking member is provided, such as a first tightening screw 524 , through which the annular clamp 522 can be clamped to the cylinder 521 to lock the relative position of the annular clamp 522 and the cylinder 521 . A second scale line 545 is provided on the cylinder 521 to indicate the vertical relative position of the circular clamp 522 and the cylinder 521. The operator can make the annular clamp 522 vertically relative to the cylinder according to the second scale mark 545. 521 to move the required distance.

6 to 8, the third adjustment assembly 53 includes a link 531, the first end of the link 531 and the free end of the cantilever 523 are pivotally connected by a third locking member, the pivot axis of the link 531 and the cylinder 221 axes are parallel. Specifically, the first end of the connecting rod 531 is provided with a through hole, the free end of the cantilever 523 is provided with a threaded hole, the third locking member is a second tightening screw 532 , and the second tightening screw 532 passes through the first end of the connecting rod 531 The through hole of the connecting rod 523 is screwed into the threaded hole of the free end of the cantilever 523 , and the connecting rod 523 can rotate around the second tightening screw 532 in the un-tightened state. The first end of the connecting rod 531 forms an arc surface, and the arc surface is provided with a third scale line 523 for indicating the pivot angle of the two. The operator can pivot the connecting rod 513 relative to the cantilever 523 according to the third scale mark 523 Turn the desired angle. After the connecting rod 513 rotates to the desired angle relative to the cantilever 523, continue to screw in the threaded section of the second tightening screw 532 to tighten the second tightening screw 532, and the connecting rod 531 and the cantilever 523 are fastened together by friction, The link 532 is thereby locked.

It can be understood that the above setting method is only a specific setting method. Those skilled in the art can set the third fixing member as a bolt and a nut that cooperate with each other. The first end of the connecting rod 531 and the free end of the cantilever 523 are both. A through hole is provided, and the bolt passes through the through hole of the two and is threadedly connected with the nut.

Still referring to FIGS. 6 to 8 , the guide portion 6 is pivotally connected to the second end of the link 531 through a fourth locking member, and the pivot axis of the guide portion 6 is perpendicular to the axis of the link 531 . Specifically, the guide portion 6 is a guide cylinder, the guide cylinder includes a cylindrical body and a channel formed on the body to allow the guide needle to pass through. Precise positioning. The second end of the connecting rod 531 is provided with a supporting plate 534 extending vertically upward, a through hole is formed on the supporting plate 534, and the fourth locking member is a third tightening screw 535, which passes through the holes on the supporting plate 534. Through hole, a part of the threaded section of the third tightening screw 535 is screwed into the threaded hole of the scale ring 536, the outer ring of the scale ring 536 is provided with a fourth scale line, and the side of the scale ring 536 away from the support plate 534 is fixedly connected with a card. Hook 537, the guide cylinder is fixedly connected with the scale ring 536 through the hook 537, and the guide cylinder, the scale ring 536 and the third tightening screw 535 can rotate synchronously at this time. The operator can rotate the guide cylinder, the scale ring 536 and the third tightening screw 535 synchronously according to the fourth scale line on the scale ring 536, so that after the guide cylinder is pivoted by the set angle, the scale ring 536 is fixed and the third tightening screw 535 is fixed. The threaded section of the screw 535 continues to be screwed into the threaded hole of the scale ring 536, so that the scale ring 536 and the support plate 534 are fastened together by frictional force, thereby locking the guide cylinder.

By adjusting the first adjusting assembly 51, the second adjusting assembly 52 and the third adjusting assembly 53, the three work together to make the guide cylinder reach the desired position and orientation, and then the guide needle is passed through the channel of the guide cylinder and the guide needle Secure to the foot in this position and orientation. The posture adjustment part 5 is configured to include a first adjustment component 51, a second adjustment component 52 and a third adjustment component 53, and the three cooperate with each other, so that the position and orientation of the guide part 6 relative to the foot are rich and varied, and can be used in large To a certain extent, it can meet the positioning requirements of guide pins required for different foot osteotomy operations, and has a wide range of applications. Through the indications of the scale lines and scale rings in the first adjustment assembly 51, the second adjustment assembly 52 and the third adjustment assembly 53, the data related to the adjusted position and direction of the guide part can be accurately quantified and accumulated, which is convenient for the doctor himself The accumulation of experience and the exchange and learning between different doctors.

It can be understood by those skilled in the art that, in an alternative embodiment, the pose adjustment part may only include the third adjustment component 53 in the above embodiment, and only the first adjustment component 51 and The third adjustment assembly 53, or only the second adjustment assembly 52 and the third adjustment assembly 53 in the above-mentioned embodiments, and the connection position is adjusted adaptively, and the adjusted embodiment can also adjust the guide portion 6 relative to the foot. However, the position and orientation of the guide part 6 relative to the foot part are not as diverse as the position and direction of the guide part 6 relative to the foot part in the above-mentioned embodiment, and the range of use is relatively narrow.

In the above arrangement, the first adjustment assembly 51 includes two cylindrical slide rails 512 connected to the two support arms 511 at the bottom of the foot fixing plate 41 and a slider 513 slidably matched with the cylindrical slide rails 512. The second adjustment assembly 52 includes a column (eg, a cylinder 521 ) disposed on the slider 513 and a second moving member that can move along the axis of the column. With this arrangement, the structure of the pose adjusting portion 5 can be made more compact and convenient, and it is convenient to install and use.

It can be understood by those skilled in the art that the above-mentioned setting method of the first adjustment component and the second adjustment component is only a relatively preferred setting method. In a possible setting method, the first adjustment component can be set to For adjusting the position of the guide portion relative to the foot along the thickness direction of the foot, the second adjustment assembly is configured to adjust the position of the guide portion relative to the foot along the length direction of the foot. The upper fixing plate 41 is close to the two vertical guide rails at both ends. A vertical slider is respectively arranged on the two vertical guide rails. The two vertical sliders are fixedly connected to the horizontal slider, and the horizontal slider is arranged on the horizontal slider. One end of the connecting rod of the third adjusting assembly is pivotally connected with the horizontal slider. But the overall structure is relatively complex. In addition, the guide rail and the first moving member in the first adjustment assembly are not limited to the structures in the above-mentioned embodiments, for example, the guide rail can be a square slide rail, a dovetail-shaped slide rail, etc., and the second moving member is set to match the shape of the slide rail In a possible embodiment, the guide rail may be a ball screw pivotally connected to the support arm, the first moving member is a nut matched with the ball screw, and the nut is rotated along the screw by rotating the ball screw. axial movement.

The upright column in the second adjusting assembly 52 is a cylinder 521, and the second moving member includes an annular clamp 522 and a cantilever 523 integrally formed with the annular clamp 522. The annular clamp 522 is sleeved on the cylinder 521, so that not only the annular clamp The hoop 522 moves up and down along the axis of the cylinder 521, and can also make the annular clamp 522 rotate around the axis of the cylinder 221. The connecting rod 531 is pivotally connected to the cantilever 523, and the pivot axis of the two is parallel to the axis of the cylinder 521. The annular clamp 522 It can rotate around the axis of the cylinder 521, and through the cooperation of the two pivoting structures, the connecting rod 531 and the guide portion can be translated in a direction perpendicular to the axes of the cylinder 521 and the cylinder slide rail 512 at the same time, which improves the position and orientation of the guide portion. Adjustment range, and then expand the scope of application.

Those skilled in the art can understand that the second moving member may only include the annular clamp 522, the annular clamp 522 can only move up and down along the axial direction of the cylinder 521, and the first end of the link 531 pivots with the annular clamp 522 Connected, the pivot axis of the link 531 is collinear with the axis of the cylinder 521 . When the first moving member is arranged to be able to move only along the axial direction of the column, the column may be a triangular prism, a quadrangular prism, a hexagonal prism, or the like.

The guide cylinder is fixed to the scale ring 536 by means of snap connection, so that guide cylinders of different specifications can be replaced, thereby facilitating guide needles of different specifications. As the guide portion 6, the guide cylinder is only a specific setting method, and those skilled in the art can adjust it as needed. For example, the guide portion can also be a body including a rectangular parallelepiped. Excellent curved channel.

It can be seen from the above description that, in the technical solution of the present invention, the foot to be osteotomy can be fixed to the fixing portion by the fixing portion, so as to avoid the accidental deviation of the foot during the osteotomy operation and the occurrence of the osteotomy direction. Offset, through the synergy of the fixing part, the posture adjusting part and the guiding part, for the feet with different degrees of deformity, the guide pin can be fixed to the foot to be osteotomy according to the required position and orientation, ensuring the guiding The accuracy of the fixed position of the needle and its orientation ensures an accurate osteotomy direction and achieves an ideal correction effect.

It will be understood by those skilled in the art that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of the different embodiments are intended to be within the scope of the present invention And form different embodiments. For example, in the claims of this invention, any of the claimed embodiments may be used in any combination.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. An auxiliary positioning device for foot osteotomy, characterized in that the auxiliary positioning device for foot osteotomy comprises a fixed part, a posture adjustment part connected with the fixed part, and a posture adjustment part arranged on the posture adjustment part the guide, Wherein, the fixing part is used to fix the foot to be osteotomy, the posture adjusting part is used to adjust the position and orientation of the guide part relative to the foot, and the guide part is used to guide the guide pin to fix to the foot. 2 . The auxiliary positioning device for foot osteotomy according to claim 1 , wherein the posture adjustment part comprises: 3 . a first adjustment assembly, connected to the fixing portion, for adjusting the position of the guide portion relative to the foot portion along the length direction of the foot portion; a second adjustment assembly connected to the first adjustment assembly for adjusting the position of the guide portion relative to the foot in the thickness direction of the foot; A third adjustment assembly, which is connected to the second adjustment assembly, is used to adjust the orientation of the guide portion. 3 . The auxiliary positioning device for foot osteotomy according to claim 2 , wherein the first adjustment assembly comprises a guide rail detachably connected to the fixed portion and a first moving member cooperatively connected with the guide rail. 4 . , the guide rail is located on one side of the fixed part, the second adjustment assembly is connected to the first moving member, The guide rail is provided with a first scale line indicating the relative position of the first moving member and the guide rail, a first locking member is provided on the first moving member, and the first locking member is used for locking all the first moving member. 4 . The auxiliary positioning device for foot osteotomy according to claim 3 , wherein the second adjusting assembly comprises a post disposed on the first moving member and a post that can move along the axis of the post. 5 . a second moving member, the third adjustment assembly is connected to the second moving member, The upright is provided with a second scale line indicating the relative position of the second moving member and the upright, the second moving member is provided with a second locking member, and the second locking member is used to lock the the second moving member. 5 . The auxiliary positioning device for foot osteotomy according to claim 4 , wherein the third adjusting assembly comprises a connecting rod, and the first end of the connecting rod is locked with the second moving member through a third lock. 6 . the member is pivotally connected, the guide portion is connected to the second end of the link, The first end of the connecting rod is provided with a third scale line for indicating the pivoting angle of the connecting rod, the third locking member is used for locking the connecting rod, Wherein, the pivot axis of the connecting rod is parallel or collinear with the axis of the column. 6 . The auxiliary positioning device for foot osteotomy according to claim 5 , wherein the guide portion and the second end of the connecting rod are pivotally connected by a fourth locking member, and the fourth locking member is on the fourth locking member. 7 . A scale ring for indicating the pivoting angle of the guide portion is sleeved, and the fourth locking member is used to lock the guide portion, Wherein, the pivot axis of the guide portion is perpendicular to the pivot axis of the link. 7 . The auxiliary positioning device for foot osteotomy according to claim 1 , wherein the guide portion comprises a body, and a channel for allowing the guide pin to pass through is formed on the body. 8 . 8 . The auxiliary positioning device for foot osteotomy according to claim 7 , wherein the cross-sectional area of the end of the channel gradually decreases along the passing direction of the guide pin. 9 . 9 . The auxiliary positioning device for foot osteotomy according to any one of claims 1 to 6 , wherein the fixing portion comprises a first fixing member and a second fixing member that are fixedly connected or integrally formed, and the The first fixing member and the second fixing member are used to fix the foot and the corresponding leg, respectively. 10 . The auxiliary positioning device for foot osteotomy according to claim 9 when referring to any one of claims 3 to 6 , wherein the first fixing member is provided with a plurality of hollow holes, and the guide rail is connected with the guide rail. 11 . Some of the hollow holes are connected by connecting members.

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